We use cookies and other tools to enhance your experience on our website and to analyze our web traffic.
For more information about these cookies and the data collected, please refer to our Privacy Policy.

Sleep Heart Health Study

Name Label Folder
ahi_a0h3
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_a0h3a
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_a0h4
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_a0h4a
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_c0h3
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_c0h3a
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_c0h4
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_c0h4a
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_o0h3
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_o0h3a
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_o0h4
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_o0h4a
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cai0p
Central Apnea Index - numer of [central apneas] per hour of sleep
Central Apnea Index - numer of [central apneas] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oai0p
Obstructive Apnea Index - number of [obstructive apneas] per hour of sleep
Obstructive Apnea Index - number of [obstructive apneas] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdi0p
Overall Respiratory Disturbance Index (RDI) all oxygen desaturations
Overall Respiratory Disturbance Index (RDI) all oxygen desaturations Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdi3p
Overall Respiratory Disturbance Index (RDI) at >=3% oxygen desaturation
Overall Respiratory Disturbance Index (RDI) at >=3% oxygen desaturation Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdi3pa
Overall Respiratory Disturbance Index (RDI) at >=3% oxygen desaturation or arousal
Overall Respiratory Disturbance Index (RDI) at >=3% oxygen desaturation or arousal Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdi4p
Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation

Ratio of the count of all apneas (central and obstructive) and hypopneas associated with at least a >=4% oxygen desaturation to the total sleep time expressed in hours

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdinr3p
Overall Respiratory Disturbance Index (RDI) (Non-rapid eye movement sleep (NREM)) at >=3% oxygen desaturation
Overall Respiratory Disturbance Index (RDI) (Non-rapid eye movement sleep (NREM)) at >=3% oxygen desaturation Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
rdirem3p
Overall Respiratory Disturbance Index (RDI) (Rapid eye movement sleep (REM)) at >=3% oxygen desaturation
Overall Respiratory Disturbance Index (RDI) (Rapid eye movement sleep (REM)) at >=3% oxygen desaturation Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ai_all
Arousal Index
Arousal Index

Total number of arousals per hour of sleep. Ratio of count of arousals to total sleep time in hours.

Sleep Monitoring/Polysomnography/Arousals
avgsat
Average oxygen saturation (SaO2) in sleep
Average oxygen saturation (SaO2) in sleep Sleep Monitoring/Polysomnography/Oxygen Saturation
minsat
Minimum oxygen saturation (SaO2) in sleep
Minimum oxygen saturation (SaO2) in sleep

Lowest oxygen saturation (SaO2)% during sleep

Sleep Monitoring/Polysomnography/Oxygen Saturation
overall_shhs2
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Overall signal quality
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Overall signal quality

Overall study grade as assigned by scorer. These codes reflected the total duration of useable (artifact free, scorable) signals during sleep time across channels, weighing those signals most critical for accurate scoring of respiratory events and staging during sleep time. The Quality Assessment Form for SHHS2 was modified so that the overall quality grade and the signal quality codes were based on signals during sleep time. Since events were only scored during sleep time this provided a more accurate assessment of signal quality during the actual time or scoring. This change would only have affected the quality grade of a small number of studies in SHHS1 where there was a significant amount of time awake with very good signals combined with very poor signals that occurred during sleep. The overall and signal quality grades are comparable between SHHS1 and SHHS2.

Sleep Monitoring/Polysomnography/Signal Quality/SHHS2
nsupinep
Percent Time non-supine
Percent Time non-supine

Percent of sleep time in non-supine body position

Sleep Monitoring/Polysomnography/Sleep Architecture
slpeffp
Sleep efficiency
Sleep efficiency Sleep Monitoring/Polysomnography/Sleep Architecture
slpprdp
Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from type II polysomnography
Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from type II polysomnography

Conventionally this variable would be called total sleep time (TST) (i.e. total time spent in stage 1 or greater).

Sleep Monitoring/Polysomnography/Sleep Architecture
supinep
Percent Time supine
Percent Time supine Sleep Monitoring/Polysomnography/Sleep Architecture
timeremp
Percent of sleep time in rapid eye movement sleep (REM)
Percent of sleep time in rapid eye movement sleep (REM)

The ratio of time in rapid eye movement sleep (REM) to total sleep time, expressed as a percentage.

Sleep Monitoring/Polysomnography/Sleep Architecture
times34p
Percent of sleep time in stage 3-4 sleep
Percent of sleep time in stage 3-4 sleep Sleep Monitoring/Polysomnography/Sleep Architecture
timest1p
Percent of sleep time in stage 1 sleep
Percent of sleep time in stage 1 sleep Sleep Monitoring/Polysomnography/Sleep Architecture
timest2p
Percent of sleep time in stage 2 sleep
Percent of sleep time in stage 2 sleep Sleep Monitoring/Polysomnography/Sleep Architecture
waso
Wake After Sleep Onset
Wake After Sleep Onset

Total amount of time spent awake after going to sleep

Sleep Monitoring/Polysomnography/Sleep Architecture
ahiov50
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - Apnea-Hypopnea Index (AHI) > 50
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - Apnea-Hypopnea Index (AHI) > 50

Medical Alert for Apnea-Hypopnea Index (AHI) over 50.

Sleep Monitoring/Polysomnography/Administrative
hrov150
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - heart rate > 150
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - heart rate > 150

Medical Alert for heart rate over 150.

Sleep Monitoring/Polysomnography/Administrative
hrund30
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - heart rate < 30
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - heart rate < 30

Medical Alert for heart rate under 30.

Sleep Monitoring/Polysomnography/Administrative
medalert
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert

Medical Alert noted during scoring. No variable available for Sleep Heart Health Study Visit 1 (SHHS1).

Sleep Monitoring/Polysomnography/Administrative
oxyund70
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - oxygen saturation (SaO2) < 70
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Medical Alert - oxygen saturation (SaO2) < 70

Medical Alert for oxygen saturation (SaO2) under 70.

Sleep Monitoring/Polysomnography/Administrative
prerdi
Polysomnogram (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Preliminary Respiratory Disturbance Index (RDI)
Polysomnogram (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Preliminary Respiratory Disturbance Index (RDI)

The Quality Assessment forms were completed by the scorer during preliminary review of the study, finalized after final scoring. Variable not used in Sleep Heart Health Study Visit 2 (SHHS2).

Sleep Monitoring/Polysomnography/Administrative
rdisn
Polysomnogram (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Respiratory Disturbance Index (RDI) as assessed by scorer
Polysomnogram (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Respiratory Disturbance Index (RDI) as assessed by scorer

The Quality Assessment forms were completed by the scorer during preliminary review of the study, finalized after final scoring

Sleep Monitoring/Polysomnography/Administrative
stdatep
Polysomnogram (PSG) Start Date (Sleep Heart Health Study Visit Two (SHHS2))
Polysomnogram (PSG) Start Date (Sleep Heart Health Study Visit Two (SHHS2)) Sleep Monitoring/Polysomnography/Administrative
stdydtqa
Polysomnogram (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Date of Study
Polysomnogram (PSG) Quality Assessment (Sleep Heart Health Study Visit One (SHHS1)): Date of Study Sleep Monitoring/Polysomnography/Administrative
cai4p
Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep
Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cai4pa
Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Central Apnea Index >= 4% - number of [central apneas with >= 4% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnba
Central Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations)
Central Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnba2
Central Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Central Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnba3
Central Apnea per hour with >=3% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Central Apnea per hour with >=3% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnba4
Central Apnea per hour with >=4% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Central Apnea per hour with >=4% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnba5
Central Apnea per hour with >=5% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Central Apnea per hour with >=5% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnbp
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnbp2
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=2% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=2% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnbp3
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=3% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=3% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnbp4
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=4% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=4% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnbp5
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=5% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=5% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnoa
Central Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Non-supine, all oxygen desaturations)
Central Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Non-supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnoa2
Central Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine)
Central Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnoa3
Central Apnea per hour with >=3% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine)
Central Apnea per hour with >=3% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnoa4
Central Apnea per hour with >=4% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine)
Central Apnea per hour with >=4% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnoa5
Central Apnea per hour with >=5% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine)
Central Apnea per hour with >=5% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnop
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, all oxygen desaturations)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnop2
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=2% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=2% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnop3
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=3% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=3% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnop4
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=4% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=4% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardnop5
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=5% oxygen desaturation)
Central Apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=5% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrba
Central Apnea per hour w/ arousals (Rapid eye movement sleep (REM), Supine, all oxygen desaturations)
Central Apnea per hour w/ arousals (Rapid eye movement sleep (REM), Supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrba2
Central Apnea per hour with >=2% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine)
Central Apnea per hour with >=2% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrba3
Central Apnea per hour with >=3% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine)
Central Apnea per hour with >=3% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrba4
Central Apnea per hour with >=4% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine)
Central Apnea per hour with >=4% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrba5
Central Apnea per hour with >=5% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine)
Central Apnea per hour with >=5% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrbp
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, all oxygen desaturations)
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrbp2
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=2% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=2% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrbp3
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=3% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=3% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrbp4
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=4% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=4% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrbp5
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=5% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Supine, >=5% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardroa
Central Apnea per hour w/ arousals (Rapid eye movement sleep (REM), Non-supine, all oxygen desaturations)
Central Apnea per hour w/ arousals (Rapid eye movement sleep (REM), Non-supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardroa2
Central Apnea per hour with >=2% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine)
Central Apnea per hour with >=2% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardroa3
Central Apnea per hour with >=3% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine)
Central Apnea per hour with >=3% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardroa4
Central Apnea per hour with >=4% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine)
Central Apnea per hour with >=4% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardroa5
Central Apnea per hour with >=5% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine)
Central Apnea per hour with >=5% oxygen desaturation or arousal (Rapid eye movement sleep (REM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrop
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, all oxygen desaturations)
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrop2
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=2% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=2% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrop3
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=3% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=3% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrop4
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=4% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=4% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cardrop5
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=5% oxygen desaturation)
Central Apnea per hour (Rapid eye movement sleep (REM), Non-supine, >=5% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cent_obs_ratio
Central/Obstructive Apnea ratio at all desaturations
Central/Obstructive Apnea ratio at all desaturations Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
cent_obs_ratioa
Central/Obstructive Apnea ratio at all desaturations with an arousal
Central/Obstructive Apnea ratio at all desaturations with an arousal Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oai4p
Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation] per hour of sleep
Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oai4pa
Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation or arousal] per hour of sleep Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnba
Obstructive Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations)
Obstructive Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnba2
Obstructive Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Obstructive Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnba3
Obstructive Apnea per hour with >=3% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Obstructive Apnea per hour with >=3% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnba4
Obstructive Apnea per hour with >=4% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Obstructive Apnea per hour with >=4% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnba5
Obstructive Apnea per hour with >=5% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Obstructive Apnea per hour with >=5% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnbp
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations)
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnbp2
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=2% oxygen desaturation)
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=2% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnbp3
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=3% oxygen desaturation)
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=3% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnbp4
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=4% oxygen desaturation)
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=4% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnbp5
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=5% oxygen desaturation)
Obstructive Apnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=5% oxygen desaturation) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnoa
Obstructive Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Non-supine, all oxygen desaturations)
Obstructive Apnea per hour w/ arousals (Non-rapid eye movement sleep (NREM), Non-supine, all oxygen desaturations) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
oardnoa2
Obstructive Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine)
Obstructive Apnea per hour with >=2% oxygen desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine) Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices